CN104680214B - Multi-protocol UHF rfid interrogator digital baseband system - Google Patents
Multi-protocol UHF rfid interrogator digital baseband system Download PDFInfo
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- CN104680214B CN104680214B CN201510111560.9A CN201510111560A CN104680214B CN 104680214 B CN104680214 B CN 104680214B CN 201510111560 A CN201510111560 A CN 201510111560A CN 104680214 B CN104680214 B CN 104680214B
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Abstract
The present invention provides a kind of multi-protocol UHF rfid interrogator digital baseband system, including：Control module and the transmission link and receives link of control module connection.Transmission link includes：The CRC check code generation module and the transmission link data cache module of CRC check code generation module connection and the coding module of control module connection being connected with control module；Coding module includes MUX, PIE coding module and TPP coding modules；When transmission link works, which kind of agreement is used according to external control signal selection, and a signal is sent to MUX selectors, determine to use coded system corresponding with selected agreement.Receives link includes：Decoder module and the receives link data cache module and CRC check module, anticollision module of decoder module connection；Decoder module includes synchronous code detection module and FM0 decoder modules.The communication of the achievable multi-protocols of the present invention, and highly versatile.
Description
Technical field
Planted the present invention relates to a kind of cultivation system, especially a kind of intelligent earth culture plant growth based on plantation expert's cloud
Training system.
Background technology
RFID technique application surface is very wide, at aspects such as logistics management, traffic administration, public place service, item trackings
There are many applications.Typical rfid system is main by reader（Reader）And label（Tag）Two parts are constituted, and its work is former
Reason is that reader and label are identified and are communicated using the coupling of electromagnetic wave or transmission.Reader sends the electricity comprising instruction
Magnetic wave, if having label in its working region, label replys electromagnetic wave of the transmitting comprising relevant information according to READER COMMAND.Read
After reading device receives the return information of label, dependent instruction is sent again and is controlled, so circulate to complete final communication
Journey.
The standard of UHF RFID techniques is presented multiple standards and the situation deposited there is presently no global unification is reached.At present
The more general standard in the whole world is EPC Global standard first kind second generation UHF RFID protocols（EPC Global C1
Gen2）, abbreviation ISO18000-6C.Comparatively the Standardization Research work of the RFID technique application of China start late, with
Intensification to this necessity understanding, will also be proposed the national standard of China in the end of the year in 2013《Information technology is penetrated
Frequency identification 800/900MHz air interface protocols》.Most products are for merely for single agreement in the market.
The content of the invention
In order to meet the market requirement and solve the problems, such as various protocols and deposit, the present invention proposes that one kind can be applied to
The UHF rfid interrogator digital baseband systems of the standard GB/T 29768-2013 agreements of ISO18000-6C and China, mesh
Be the communication for realizing multi-protocols, and highly versatile can be transplanted between each platform.The technical solution adopted by the present invention
It is：
A kind of multi-protocol UHF rfid interrogator digital baseband system, including：
Control module and the transmission link and receives link of control module connection；
Transmission link includes：The CRC check code generation module and CRC check code generation module being connected with control module connect
The coding module of transmission link data cache module and the control module connection for connecing；Coding module includes that MUX selectors, PIE are compiled
Code module and TPP coding modules；
When transmission link works, which kind of agreement is used according to external control signal selection, and one is sent to MUX selectors
Individual signal, determines to use coded system corresponding with selected agreement；And utilize PIE coding modules or TPP coding modules pair
Need the data for sending to be encoded accordingly, that is, carry out PIE codings or TPP codings；
Receives link includes：Decoder module and the receives link data cache module and CRC check mould of decoder module connection
Block, anticollision module；Decoder module includes synchronous code detection module and FM0 decoder modules；
Synchronous code detection module is used to detect the association that reception data are used according to the preamble for receiving data
View；And sending corresponding control signal to anticollision module so that anticollision module uses corresponding anticollision Processing Algorithm；
FM0 decoder modules are used to carry out FM0 decodings to receiving data；
Anticollision module is used for the control signal sent according to synchronous code detection module, is processed using corresponding anticollision
Algorithm；
CRC check module is used to carry out CRC check to decoded data；
Control module is used to carry out corresponding SECO and state control according to the agreement of processing data；
Also include：
Each module in control module, and transmission link and receives link provides the Clock dividers of work clock.
Further, the algorithm process that the anticollision module is carried out is specially：If currently receiving the agreement that data are used
It is ISO18000-6C agreements, then collision is prevented using Slotted Aloha algorithms；If currently receiving the agreement that data are used
For GB/T 29768-2013 agreements prevent collision using DDS-BT algorithms.
Further, transmission link data cache module and receives link data cache module are all worked using asynchronous FIFO
Mode.
The advantage of the invention is that：The present invention proposes the standard GB/ that can be applied to ISO18000-6C and China
The UHF rfid interrogator digital baseband systems of T 29768-2013 agreements, realize the communication of multi-protocols, and highly versatile, can
Transplanted between each platform.
Brief description of the drawings
Fig. 1 is connection and position view of the present invention in rfid interrogator.
Fig. 2 is architecture logic figure of the invention.
Specific embodiment
With reference to specific drawings and Examples, the invention will be further described.
Rfid interrogator digital baseband system proposed by the present invention, is write using verilog language and describes its internal logic
Structure, can realize on various different development boards and ARM cores.Connected mode and position are as schemed in whole rfid interrogator
Shown in 1：
Digital baseband system part can be connected by general-purpose interfaces such as UART, SPI with outside pc client.Digital baseband
Components of system as directed is connected after device is filtered with analog radio frequency part after filtering, and signal is launched, and realizes the communication with label.
The Main Function of digital baseband system part is the encoding and decoding for realizing data, anticollision treatment, whole system and mark
Response SECO between label.
Fig. 2 show the frame construction drawing of whole digital baseband system, and whole system mainly includes following part：
Control module and the transmission link and receives link of control module connection；
Transmission link includes：The CRC check code generation module and CRC check code generation module being connected with control module connect
The transmission link data cache module for connecing（That is that RAM above in Fig. 2）The coding module connected with control module；Fig. 2
In, coding module includes MUX, PIE coding module and TPP coding modules；
When transmission link works, according to external control signal（May be from pc client）Which kind of agreement selection uses, and
And a signal is sent to MUX selectors, determine to use coded system corresponding with selected agreement；And using PIE codings
Module or TPP coding modules are encoded accordingly to the data for needing to send；If selection ISO18000-6C agreements are to needing hair
The data separate PIE coding modules for sending carry out PIE codings（Adoption status machine is realized）；If selection GB/T 29768-2013 agreements
TPP codings are carried out to the data for needing to send using TPP coding modules.
CRC check code generation module can produce CRC-5 or CRC-16 check codes.
Receives link includes：Decoder module and the receives link data cache module of decoder module connection（That is under in Fig. 2
That RAM in face）With CRC check module, anticollision module；Decoder module includes synchronous code detection module and FM0 decoder modules；
Synchronous code detection module is used to detect the association that reception data are used according to the preamble for receiving data
View；And sending corresponding control signal to anticollision module so that anticollision module uses corresponding anticollision Processing Algorithm；Due to
The preamble of ISO18000-6C agreements and GB/T 29768-2013 agreements is different, and every kind of agreement has two kinds together
Step code.After receiving signal from wave filter, it is that synchronous code detection module will detect that for which kind of agreement, then gives anticollision module
A signal is sent, for determining which kind of anticollision Processing Algorithm used.
FM0 decoder modules are carried out FM0 decodings according to the docking of ISO18000-6C agreements by signal；According to GB/T 29768-
2013 agreements carry out FM0 decodings to receiving data；
Anticollision module：If the agreement that currently reception data are used is ISO18000-6C agreements, using Slotted
Aloha algorithms come prevent collision；If the agreement that currently reception data are used is for GB/T 29768-2013 agreements are calculated using DDS-BT
Method come prevent collision；Collision is prevented in this example, when referring to multi-tag and communicating, prevents each reception data of multi-tag from touching
Hit.
CRC check module is used to carry out CRC check to decoded data；
Control module：The control section of whole protocol emulator, ISO18000-6C and GB/T 29768-2013 agreements are equal
There are several different state, the several different order of correspondence again of every kind of state；Control module be broadly divided into SECO and
State is controlled.The response sequential with label is responsible in SECO part, such as read write line first sends a query order, can wait
The corresponding of label is treated, if not responding to may proceed to wait, it is known that receive correct response.State control is responsible in control module
State transition；State control is just responsible for the selection and the analysis to receiving instruction that read write line sends instruction, such as read write line
The states such as select, query, ack can be in.
Each module during the digital baseband system also includes to control module, and transmission link and receives link provides work
Make the Clock dividers of clock.
Because each intermodule working frequency is not quite similar, it is therefore desirable to which buffered data ensures normal work, and the present invention exists
Data cache module is each provided with transmission link and receives link, and is all realized using asynchronous FIFO mode；Send chain
Respectively there is data cache module in road and receives link, read-write data do not interfere with each other.
Term involved in the present invention is explained as follows：
PIE is encoded --- pulsewidth coding
TPP is encoded --- and clean cut system pulse position is encoded
MUX --- alternative selector
FM0 --- spacing coding between two-phase
Slotted aloha --- with trough time slot anti-collision algorithm
DDS-BT --- dynamic scatter shrinks binary tree algorithm
CRC --- CRC.
Claims (3)
1. a kind of multi-protocol UHF rfid interrogator digital baseband system, it is characterised in that including：
Control module and the transmission link and receives link of control module connection；
Transmission link includes：What the CRC check code generation module and CRC check code generation module being connected with control module were connected
Transmission link data cache module and the coding module of control module connection；Coding module includes MUX selectors, PIE coding moulds
Block and TPP coding modules；
When transmission link works, which kind of agreement is used according to external control signal selection, and a letter is sent to MUX selectors
Number, determine to use coded system corresponding with selected agreement；And using PIE coding modules or TPP coding modules to needing
The data of transmission are encoded accordingly, that is, carry out PIE codings or TPP codings；
Receives link includes：Decoder module and decoder module connection receives link data cache module and CRC check module,
Anticollision module；Decoder module includes synchronous code detection module and FM0 decoder modules；
Synchronous code detection module is used to detect the agreement that reception data are used according to the preamble for receiving data；And
Corresponding control signal is sent to anticollision module so that anticollision module uses corresponding anticollision Processing Algorithm；
FM0 decoder modules are used to carry out FM0 decodings to receiving data；
Anticollision module is used for the control signal sent according to synchronous code detection module, is adjusted using at corresponding anticollision
Method；
CRC check module is used to carry out CRC check to decoded data；
Control module is used to carry out corresponding SECO and state control according to the agreement of processing data；
Described multi-protocol UHF rfid interrogator digital baseband system also includes：
Each module in control module, and transmission link and receives link provides the Clock dividers of work clock.
2. multi-protocol UHF rfid interrogator digital baseband system as claimed in claim 1, it is characterised in that：
The algorithm process that the anticollision module is carried out is specially：If the agreement that currently reception data are used is ISO18000-6C
Agreement, then prevent collision using Slotted Aloha algorithms；If the agreement that currently reception data are used is GB/T 29768-
2013 agreements prevent collision using DDS-BT algorithms.
3. multi-protocol UHF rfid interrogator digital baseband system as claimed in claim 1, it is characterised in that：
Transmission link data cache module and receives link data cache module all use asynchronous FIFO working method.
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| CN104680214B true CN104680214B (en) | 2017-07-07 |
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| CN113379021A (en) * | 2021-06-03 | 2021-09-10 | 北京中电华大电子设计有限责任公司 | Reconfigurable NFC coprocessor |
| CN116362271B (en) * | 2023-06-01 | 2023-08-25 | 高新兴智联科技股份有限公司 | RFID tag identification method for realizing double standards |
| CN116506530B (en) * | 2023-06-27 | 2023-08-22 | 深圳市国芯物联科技有限公司 | Multi-protocol RFID reader-writer with low error rate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201562287U (en) * | 2009-12-23 | 2010-08-25 | 上海申铁信息工程有限公司 | Multi-band multi-protocol RFID intelligent reader with broad application scope |
| CN101894281A (en) * | 2010-06-18 | 2010-11-24 | 山东大学 | Baseband signal processing SOC chip of multi-protocol UHF RFID reader |
| CN101636749B (en) * | 2007-02-21 | 2013-01-23 | Sk普兰尼特有限公司 | Power supply control method for radio-frequency identification reader in mobile terminal |
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2015
- 2015-03-13 CN CN201510111560.9A patent/CN104680214B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636749B (en) * | 2007-02-21 | 2013-01-23 | Sk普兰尼特有限公司 | Power supply control method for radio-frequency identification reader in mobile terminal |
| CN201562287U (en) * | 2009-12-23 | 2010-08-25 | 上海申铁信息工程有限公司 | Multi-band multi-protocol RFID intelligent reader with broad application scope |
| CN101894281A (en) * | 2010-06-18 | 2010-11-24 | 山东大学 | Baseband signal processing SOC chip of multi-protocol UHF RFID reader |
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Inventor after: Jiang Guojian Inventor before: Xu Zhen Inventor before: Wang Weidong Inventor before: Chen Lan |
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Effective date of registration: 20170522 Address after: 350000 room 2-45F, building No. 27, Lane 1, Mawei District, Fujian, Fuzhou Applicant after: Fujian Aitedian Information Technology Co.,Ltd. Address before: 214135 Jiangsu New District of Wuxi City Linghu Road No. 200 China Sensor Network International Innovation Park building C Applicant before: Jiangsu Internet of Things Research & Develoment Co., Ltd. |
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Granted publication date: 20170707 Termination date: 20210313 |